is it necessary to close your essay with the summary of advantages/disadvantages?
我国3g系统主要使用的频段是2.4ghz。
用户长时间不使用( )会导致其被收回。
哪类系统的干扰主要来自于本小区内码字的非正交引起的多址干扰
choose the appropriate time signals to fill in the blanks. (choose only one correct answer) _____________, he received a film camera as his birthday present. ___________, he became increasingly interested in cinematography. after 13 years of relentless pursuit of his beloved cause, he won himself a seven-year contract with universal studios where he strove hard and produced numerous notable movies. __________, he revealed that his lifelong conviction was to “make sure you are right and go on!”, which has immensely inspired the young with the dream of film.
系统温度小于泡点时,体系处于( )相态。
胸部不丰满的病因病机
下列关于a-gps定位系统的说法中不正确的是()
在sql语言的查询语句中,实现投影操作命令的是()
in the sample essay, the example of hardly is used to show that adding a comma would show a big difference.
给定类定义: 1. public class test { 2. int x= 12; 3. public void method(int x) { 4. x =x; 5. system.out.println(x); 6. } 7. } 给定: 34. test t = new test(); 35. t.method(5); 则testclass中第5行输出结果为:
according to the big bang theory, the first element formed in the universe is helium.
最便宜、使用安全的电池是
相变材料按照相变方式主要可以分为 相变材料、固-固相变材料、固-气相变材料和液-气相变材料。
the sign of photochemical og pollution is an increase in the concentration of ____________; after a photochemical og pollution event, the pollutants __________ have a stimulating effect on the human respiratory tract and eyes.